Two matched thin slices of a transparent natural diamond crystal that were polished on both sides to highlight the internal crystal sector zoning. The diamond sector zoning is caused by graphite-coated disk-crack-like defects. See article: Optically-zoned (Star) Diamonds from Zimbabwe in Rocks and Minerals, March-April 2014, pages 173-178

The minerals illustrated on this site are presented for reference purposes only. The owner of this site did not collect the minerals and collectors should not assume access is permitted to the property based on inclusion in this museum. Please contact the property owner to obtain legal permission before entering private property.